In 2010, Lexus introduced a brand new convertible with a retractable hardtop called the IS 350 C. It was based upon the popular IS luxury sedan, complete with the key amenities and creature comforts that Lexus was famous for. The sports car boasted a powerful 3.5-liter V6 engine that could make 306 horsepower. The 2011 model year featured new LED running lights and a few minor tweaks to the interior and exterior design. While no major changes were in store for the 2012 model year, in 2013, Lexus added HD radio and the popular Enform 2.0 feature to the IS 350 C as standard options. The only major change to this model for 2014 was a new metallic-trimmed interior, which was available on the upgraded F Sport package.